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24 Cards in this Set
- Front
- Back
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frequency |
a measure of how many wave crests or troughs pass a given point in one unit of time; identifies the pitch of a sound - lower frequency...longer wavelength - higher frequency...shorter wavelength |
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convex lens |
a lens that is thicker toward its middle, which gives the lens a shape that bulges outward |
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reflection |
the bouncing of waves off a surface |
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energy |
the ability to cause change; and in motions of objects |
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refraction |
creates a change in the direction of a wave because of a change in the medium it is traveling through |
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wave |
a disturbance that transfers energy from one point to another |
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sound wave |
a compressional wave produced by vibrations in matter - sound waves move fastest through solids and slowest through gases
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pitch |
the highness of lowness of a sound, depends on the frequency of the sound waves - lower the pitch...lower the frequency -higher the pitch...higher the frequency |
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wavelength |
the distance between two waves' crests or two waves' troughs |
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amplitude |
the height of the wave from its trough or crest to its midpoint; as the amplitude increases its volume increases |
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concave lens |
the lens curves inward; thinner in the middle than it is at the edges |
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Sound waves cannot travel through __________. |
empty space |
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transparent |
allows light to pass through; objects look clear ex: lens, transparency, window |
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translucent |
allows some light to travel through; objects appear blurred ex: stained glass, lampshades |
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opaque |
allows no light to pass through; objects cannot be seen at all on other side ex: books, walls |
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medium |
another word for matter (solid, liquid, or gas); a substance or material that carries the wave |
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kinetic energy |
energy in motion; the faster an object moves or the more mass it contains...will have more kinetic energy |
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law of conservation of energy |
states that energy can change form, but it cannot be created or destroyed |
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potential energy |
energy stored in an object or a material |
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crest |
highest point of a wave |
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trough |
lowest point of a wave |
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echo |
heard when sound waves are reflected from a surface |
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nuclear fission |
involves splitting a nucleus into two or more pieces |
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nuclear fusion |
the joining of two or more smaller atoms into a larger one |
